Thermal degradation analysis of wood treated with fire-retardants
2005
Urbanovics, I.(Latvian State Inst. of Wood Chemistry, Riga (Latvia))E-mail:[email protected] | Mekss, P.(University of Latvia, Riga (Latvia). Faculty of Chemistry)E-mail:[email protected] | Dobele, G.(Latvian State Inst. of Wood Chemistry, Riga (Latvia))E-mail:[email protected]
Fire hazard control in wooden constructions is very important. For this purpose, fire retardants are used, which change the thermo-destruction of wood and reduce combustion. The aim of the present research project was to study and compare the fire-protective properties of fire-retardants and to explain the chemical process of pyrolysis, namely, degradation in treated and untreated wood. The influence of fire-retardants on the wood thermal stability and the amount of volatile products was estimated on the basis of thermal analysis results. The volatile products (above 50%) of the pyrolysis process were identified, and the mechanism of the influence of fire-retardants on wood thermo-destruction was studied. The presence of toxic compounds, formed by pyrolysis, was evaluated. The results of the study have shown that analytical pyrolysis is a modern, precise method for identifying the toxic compounds of volatile products in processes of both wood pyrolysis and combustion. The application of analytical pyrolysis enables a prompt determination of the fire protection degree of building wood constructions.
显示更多 [+] 显示较少 [-]